PT 61 S2 Q2

Since there is no survival value in an animal's having anorgan that is ... ...

Of the following, which one illustrates a principle that is most similar to the principle illustrated by the passage?
(A) A store in a lower-income neighborhood finds that it is unable to sell its higher-priced goods and so stocks them only when ordered by a customer.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Complete Section: LR-A, Oct. '10 LSAT (PT 61 Sec. 2)